How many subshells are there in the shell with n = 6?

The number of subshells within a certain shell can be identified using the orbital angular momentum quantum number "l"

"l" is given values from zero till (n-1)

So, for n=6

l is given the following values: 0,1,2,3,4,5

Counting the number of subshells, we will find that the shell with n=6 has 6 subshells